92 Part Number STH044 10/13
Recovery/Evacuation Procedures
1. Place the toggle switch in the OFF position.
2. Install manifold gauge set, scale, and recovery
unit or two-stage vacuum pump.
3. Perform recovery or evacuation:
A. Recovery: Operate the recovery unit as
directed by the manufacturer’s instructions.
B. Evacuation prior to recharging: Pull the
system down to 250 microns. Then allow the
pump to run for an additional half hour. Turn
off the pump and perform a standing vacuum
leak check.
NOTE: Check for leaks using an electronic leak
detector after charging the ice machine.
4. Follow the Charging Procedures on the next
page.
RECOVERY/EVACUATION CONNECTIONS
OPEN
OPEN
VACUUM PUMP/
RECOVERY UNIT
CLOSED
SCALE
REFRIGERANT
CYLINDER
OPEN
LOW SIDE
ACCESS
VALVE
HIGH SIDE
ACCESS
VALVE
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